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An exceptionally uncommon Copper Replacement Agate containing preserved hematite tube structures and visible native copper mineralization
but even at this level it remains unpredictable to work with
This piece may not be defined by bright colors or classic fortification patterns
concentric eyes
Marquette Lake Superior Agate Ring Copper Replacement Agate An exceptionally uncommon Copper ReplacementThis material is collected from a very limited number of shoreline locations in the Upper Peninsula region of Lake Superior. One of the primary collecting areas has been lost to shoreline erosion, and another is now seasonally buried under shifting sand, significantly reducing reliable access to fresh material. As a result, the usable yield from field recovery is extremely low. The majority of nodules found in these areas are not suitable for lapidary
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